Roof-light.



A. KLEIN.

ROOF LIGHT.

urmoumn FILED JULY 7, 1911.

1,021,782. Patented Apr. 2, 1912.

3 SHEETS-SHEET 1.

A. KLEIN.

' ROOF LIGHT.

APPLIOATION FILED JULY 7, 191 1.

I 1,021,782. Patented Apr.2, 1912.

' s SHEETS-SHEET 2 COLUMBIA PLANOORAPH CO.. WASHINGTON D c A. KLEIN.ROOF LIGHT.

APPLHJATIOH FILED JULY '1, 1911.

a sums-sum s.

I z 6III!IIIIIII'IIIIIIIIIIII Patented Apr, 2, 1912.

. UNITED STATES PATENT OFFICE.

ALIBIN KLEIN, or ERFURT, GERMANY, AssIGNo'n. TO THE FIRMVOF J. A. JOHN IAKTIENGESELLSCI-IAFT,, or ERFURT-ILVERSGEHOFEN, GERMAnY.

ROOF-LIGHT.

Patented Apr. 2, 1912.

Serial No. 637,316.

To all whom it may concern:

Be it, known that I, ALBIN KLEIN, a subject of the Emperor of Germany,residing ,at Erfurt, Germany, have invented certain Improvements inRoof-Lights, of which the following is a specification.

The present invention relates to improvements in the 0 crating mechanismof rooflights of the klnd composed of a plurality of superposed louveredframes carried by a system of lazy-tongs levers.

The invention consists in the various details of construction andcombination of the levers as hereinafter set forth and claimed andillustrated in the accompanying drawings of which Figure 1 represents asectional view of one construction, the roof-light being shown open,Fig. 2, a section on the line AB of Fig. 1, and Fig. 3, a view similarto Fig. 1,

.. theroof-light being closed. Figs. 4- to 6 are sectional views, eachof a somewhat modified construction, Fig. 7 is identical with Fig. 6,the elements being shown in a different position. Figs. 8 and 9 arefurther modifications, while Figs. 10 and 11 are sectional views of asteadying element employed in the last three constructions.

The louvered frames 4, 5 and 6 are carried by four sets of lazy-tongslevers, one set being provided for each corner of the frames- The setsare arranged in pairs working in parallel planes. Each pair has a commonactuating lever, and both actuating levers have their outer endsconnected by a horizontal rod 25 (Fig. 2) carrying a chain 9 or someother pull-element by means of which all the levers may besimultaneously operated for opening out the frames. The lazy-tongslevers are pivoted at l, 2 and 3 to the different frames, and theactuating levers may either be connected to a shaft 24 mounted acrossthe stationary frame 6 so as to strengthen the latter, or to independentpivots connected to the same frame. In addition to the long arm connected to the rod 25, each actuating lever is fitted with two short armseach of which is connected to a different set of lazy-tongs levers.

In Figs. 1 to 5 the lowermost lever 7 or 14 of each set has'its lowerarm set at an angle to the rest of the lever and, while the bent arm ofthe lever 7 is pivoted directly to its allotted arm on the actuatinglever,

that of the lever 14 is connected to its actuating arm through themedium of a link 11 and a bell-crank lever 13, the latter being pivotedat 12 to the frame 6. In Figs. 1 to 3 the short arms of the actuatinglevers 8 are turned to the same side of the long arm and are set at anarrow angle to one anends. When the roof is slanting it is usual toopen out the lower ends of the frames to a greater extent than the upperends, the better to exclude the weather. For this purpose thearrangement shown in Fig. 4 may be resorted to, the construction of theactuating lever 16 being here somewhat modified. If the slope of theroof is very steep, the difierence in the opening out should be greaterstill, for instance as shown in Fig. 5, where the lazy-tongs levers areshorter at one end of the frame than at the other. The latterarrangement has the effect, not only of opening out the lowerends of theframes more than the upper ones, but also of tilting the raised set offrames backward, as shown in Fig. 5. In the remaining' constructions thelowermost levers 20 of the lazy-tongs are straight, and all areconnected to the short arms 17 of the actuat-- ing levers 18 by means oflinks 19. The arms 17 are set in opposite directions and at about rightangles to the lever 18. I The difference between the constructions shownin igs. 6, 7 and 8 is merely that the actuating evers are set inopposite directions. In Fig. 9 this construction of the levers isadapted for opening out the frames more at one end than at the other,the lower arms of the levers 20 being of different lengths and so alsothe links 19. Also in this case the raised set of frames is tiltedbackward. In the three latter constructions means are provided forsteadying the lazytongs levers. This steadying arrangement, which isshown more clearly in Figs. 10 and 11, consists of a slide 22 fitted ina guideway 23 and pivoted at 21 together with one of the levers 20 tothe link- 1.9. One. such slide is provided for each pair of lazy-tongs.These slides are not subjected to any great stress and do not thereforeappreciably in crease the previously slight friction.

Although only two movable frames 4 and 5 are in the drawings, anyconvenient numher of such frames may be employed, the lazy-tongs beingcorrespondingly extended.

I claim 1. In a roof-light of the character described, the combinationwith a series of superposed louvered frames, of four sets of lazy-tongslevers, each set supporting the frames at a different corner, the setsbeing connected in pairs working in parallel planes, an actuating leverfor each pair, and connections between the two actuating le vers for thesimultaneous operation of all the sets of lazy-tongs levers and openingout of the frames, substantially as set forth.

2. In a roof-light of the character described, the combination with aseries of superposed louvered frames, of four sets of lazy-tongs levers,each set supporting the frames at a different corner, the sets beingconnected in pairs working in parallel planes, an actuating lever foreach pair pivoted to the lowermost, stationary frame, each actuatinglever having a long and two short arms, the short arms being connectedto difierent sets of lazy-tongs levers, a rod connecting the long armsof the two actuating levers, and a pull-element on said rod foroperating the levers and opening out the frames, substantially as setforth.

3. In a roof-light of the character de scribed, four sets of lazy-tongslevers connected in pairs working in parallel planes, an actuating leverfor each pair, each actuating lever having a long and two short arms, alink connecting the short arm of each actuating lever with a differentset of lazy-tongs levers, and a rod connecting the long arms of theactuating levers for the simultaneous operation of the same, substantially as and for the purpose set forth.

4. In a roof-light of the character described, four sets of lazy-tongslevers connected in pairs working in parallel planes, an actuating leverfor each pair, each actuating lever having a long and two short arms, alink connecting the short arm of each actuating lever with a differentset of lazy-tongs levers, a slide movably held in a stationaryguide-way, said slide being pivoted to one of the links for steadyingthe lazy-tongs, and a rod connecting the long arms of the two actuatinglevers for the simultaneous operation of the same, sub-- stantially asset forth.

5. In a roof-light of the character described, the combination with aseries of superposed louvered frames, of four sets of lazy-tongs levers,each set supporting the frames at a different corner, the sets beingconnected in pairs working in parallel planes, an actuating lever foreach pair, and connections between the two actuating levers for thesimultaneous operation of all the sets of lazy-tongs levers and openingout of the frames, the levers being made shorter at one end of theframes than at the other so as to open out the frames differently attheopposite ends and at the same time tilt the raised series of raisedframe backward, substantially as and for the purpose set forth.

ALBIN KLEIN.

WVitnesses FERDINAND HoERsTER, CI-IAs. BORNGRAEBER.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents, Washington, D. G.

